STORA ENSO OYJ MANAGERS' TRANSACTIONS 25 July 2025 at 14:00 EEST Stora Enso Oyj - Managers' Transactions ____________________________________________ Person subject to the notification requirement Name: Niclas Rosenlew Position: Chief Financial Officer Issuer: Stora Enso Oyj LEI: 7437000ZP669LKUTZ738 Notification type: INITIAL NOTIFICATION Reference number: 117275/4/4 ____________________________________________ Transaction date: 2025-07-24 Venue: NASDAQ HELSINKI LTD (XHEL) Instrument type: SHARE ISIN: FI0009005961 Nature of transaction: ACQUISITION Transaction details (1): Volume: 10000 Unit price: 9.47 EUR (2): Volume: 434 Unit price: 9.47 EUR (3): Volume: 107 Unit price: 9.47 EUR Aggregated transactions (3): Volume: 10541 Volume weighted average price: 9.47 EUR For total ownership of Stora Enso's shares by the Group Leadership Team members please see our website (https://www.storaenso.com/en/investors/governance/insiders/pdmr -ownership). For further information, please contact: Jutta Mikkola SVP Investor Relations tel. +358 50 544 6061 The forest is at the heart of Stora Enso, and we believe that everything made from fossil-based materials today can be made from a tree tomorrow. We are the leading provider of renewable products in packaging, biomaterials, and wooden construction, and one of the largest private forest owners in the world. Stora Enso has approximately 19,000 employees and our sales in 2024 were EUR 9 billion. Stora Enso shares are listed on Nasdaq Helsinki Oy (STEAV, STERV) and Nasdaq Stockholm AB (STE A, STE R). In addition, the shares are traded in the USA on OTC Markets (OTCQX) as ADRs and ordinary shares (SEOAY, SEOFF, SEOJF). storaenso.com/investors (http://www.storaenso.com/investors/) STORA ENSO OYJ For further information, please contact: Jutta Mikkola SVP Investor Relations tel. +358 50 544 6061